<script setup>
import { User, Lock } from '@element-plus/icons-vue'
import { ref, reactive } from 'vue'
import { ElMessage } from 'element-plus'
//控制注册与登录表单的显示， 默认显示注册
const isRegister = ref(false)
// 定义数据模型
const registerData = reactive({
    username: '',
    password: '',
    repassword: ''
})

// 校验密码的函数
const checkRePassword = (rule, value, callback) => {
    if (value === '') {
        callback(new Error('请再次输入密码'))
    } else if (value !== registerData.password) {
        callback(new Error('两次输入密码不一致'))
    } else {
        callback()
    }
}

// 定义表单项校验规则
const rules = {
    username: [
        // 是否需要        错误时的报错信息        触发方式:失焦
        { required: true, message: '请输入用户名', trigger: 'blur' },
        { min: 5, max: 16, message: '长度在 5 到 16 个字符', trigger: 'blur' }
    ],
    password: [
        { required: true, message: '请输入密码', trigger: 'blur' },
        { min: 5, max: 16, message: '长度在 5 到 16 个字符', trigger: 'blur' }
    ],
    repassword: [
        { validator: checkRePassword, trigger: 'blur' }
    ]
}

// 点击注册后发生的事件
import { userRegisterService } from '../api/user.js'
let register = async () => {
    let result = null;
    try {
        result = await userRegisterService(registerData)
        ElMessage({
            message: '注册成功',
            type: 'success',
        })
    } catch (error) {
        ElMessage.error('注册失败')
    }

}

// 登录
const loginData = reactive({
    username: '',
    password: ''
})
const rules_login = {
    username: [
        // 是否需要        错误时的报错信息        触发方式:失焦
        { required: true, message: '请输入用户名', trigger: 'blur' },
        { min: 5, max: 16, message: '长度在 5 到 16 个字符', trigger: 'blur' }
    ],
    password: [
        { required: true, message: '请输入密码', trigger: 'blur' },
        { min: 5, max: 16, message: '长度在 5 到 16 个字符', trigger: 'blur' }
    ]
}


// 点击登录以后发生的事件
import { useTokenStore } from "@/store/token.js"
import { userLoginService } from "../api/user.js"
import { useRouter } from 'vue-router';
const tokenStore = useTokenStore()
const router = useRouter()
let login = async () => {
    let result = null;
    try {
        result = await userLoginService(loginData)
        console.log(result.data);
        // element-plus的消息提示(相当于alert)
        ElMessage({
            message: '登录成功',
            type: 'success',
        })
        // 把方法返回的token存储到本地
        tokenStore.setToken(result.data)
        router.push('/')
    } catch (error) {
        ElMessage.error('登录失败')
    }


}



</script>

<template>
    <el-row class="login-page">
        <el-col :span="12" class="bg"></el-col>
        <el-col :span="6" :offset="3" class="form">

            <!-- 注册表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-if="isRegister" :model="registerData" :rules="rules">
                <el-form-item>
                    <h1>注册</h1>
                </el-form-item>
                <!-- 用户名框 -->
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="registerData.username"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入密码"
                        v-model="registerData.password"></el-input>
                </el-form-item>
                <!-- 确定密码 -->
                <el-form-item prop="repassword">
                    <el-input :prefix-icon="Lock" type="password" placeholder="请输入再次密码"
                        v-model="registerData.repassword"></el-input>
                </el-form-item>
                <!-- 注册按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="register">
                        注册
                    </el-button>
                </el-form-item>
                <!-- 返回链接 -->
                <el-form-item class="flex">
                    <el-link type="info" :underline="false" @click="isRegister = false">
                        ← 返回
                    </el-link>
                </el-form-item>
            </el-form>

            <!-- 登录表单 -->
            <el-form ref="form" size="large" autocomplete="off" v-else :rules="rules_login" :model="loginData">
                <el-form-item>
                    <h1>登录</h1>
                </el-form-item>
                <!-- 用户名框 -->
                <el-form-item prop="username">
                    <el-input :prefix-icon="User" placeholder="请输入用户名" v-model="loginData.username"></el-input>
                </el-form-item>
                <!-- 密码框 -->
                <el-form-item prop="password">
                    <el-input name="password" :prefix-icon="Lock" type="password" placeholder="请输入密码"
                        v-model="loginData.password"></el-input>
                </el-form-item>
                <!-- 记住我 忘记密码 -->
                <el-form-item class="flex1">
                    <div class="flex1">
                        <el-checkbox>记住我</el-checkbox>
                        <el-link type="primary" :underline="false">忘记密码？</el-link>
                    </div>
                </el-form-item>
                <!-- 登录按钮 -->
                <el-form-item>
                    <el-button class="button" type="primary" auto-insert-space @click="login">登录</el-button>
                </el-form-item>
                <!-- 注册跳转 -->
                <el-form-item class="flex1">
                    <el-link type="info" :underline="false" @click="isRegister = true">
                        注册 →
                    </el-link>
                </el-form-item>
            </el-form>
        </el-col>
    </el-row>
</template>

<style lang="scss" scoped>
/* 样式 */
.login-page {
    height: 100vh;
    background-color: #fff;

    .bg {
        background: url('@/assets/logo2.png') no-repeat 60% center / 240px auto,
            url('@/assets/login_bg.jpg') no-repeat center / cover;
        border-radius: 0 20px 20px 0;
    }

    .form {
        display: flex;
        flex-direction: column;
        justify-content: center;
        user-select: none;

        .title {
            margin: 0 auto;
        }

        .button {
            width: 100%;
        }

        .flex1 {
            width: 100%;
            display: flex;
            justify-content: space-between;
        }
    }
}
</style>